Woven fabric.



PATBNTBD AUG. 14, 1906. W. M. STEVBNSON.

WOVEN FABRIC.

APPLICATION FILED Ayas, 1905 -ms Nmzms rusas cal, wAsmNm-UN, v. c.

IILLIAM M. STEVENSON, OF INDIAN ORCHARD, MASSACHUSETTS.

WOVEN FABRIC.

Specification of Letters Patent.

Patented Aug. 14, 1906.

Application led August 3,1905. Serial No. 272,547.

To all whrmt it 11m/y concern:

Be it known that I, VILLIAM M. STEVEN soN, a citizen of the United States, and a resident of Indian Orchard, Massachusetts, have invented certain Improvements in Woven Fabrics, of which the following is a specification.

My invention relates to that class of Woven fabrics in which twisted strands of paper are used as weft-threads, the obj ect of my invention being to permit of the weaving of such fabrics having weftthreads of relatively harsh or inferior character without injury to such weft-threads. This object I attain in the manner hereinafter set forth, reference being had to the accompanying` drawings, in which- .Figure I represents a face view of a piece of fabric embodying my invention. Fig. 2 is an exaggerated sectional view of part of the same on the line a a, Fig. l. Fig. 3 represents a face view of another piece of fabric embodying my invention; and Fig. 4. is an exaggerated sectional view of the same on the line b, Fig. 3.

In weaving fabrics having weft-threads composed of strands of twisted paper some difficulty has been experienced, especially in the use of paper of a harsh or brittle character, owing to the splitting or tearing of the paper if the same is sharply or abruptly bent in passing over or under the warp-threads, and this is especially the case if the warpthreads are relatively coarse in order to impart the necessary longitudinal strength to the fabric. In order to overcome this objection, I use a plurality of fine warp-threads spaced apart by the reed, but shedded as a unit, instead of the single heavier warpthread heretofore employed, so that in weaving the fabric the bends or curves assumed by the paper weft-threads are not so abrupt as to cause fracture or tearing of the same however inferior in character the paper v may be.

In 4the accompanying vdrawings I have shown in Fig. 1 a fabric in which each set or group of warp-threads is composed of two threads l 1 these two threads being spaced apart by the reed, but shedded as a unit and being interwoven with the paper weftthreads 2 and 3 in an ordinary plain weave.

In the fabric shown in Figs. 3 and 4 I have combined with each pair of warp-threads 1 1 an additional warp-thread 4, which is used for tying or binding the weft-threads 2 and 3 in those portions of the fabric in which such weft-threads would otherwise fioat for a considerable space, the pairor group of warp-threads 1 l being thus relieved from this tying duty and prevented from appearing prominently on either face of the fabric.

Having thus described my invention, I claim and desire to secure by Letters Patentl. A woven fabric in which paper weftthreads are interwoven with fine warpthreads disposed in sets or groups, each set consisting of a plurality of threads spaced apart but shedded as a unit, substantially as specified.

2. A woven fabric in which weft-threads of paper are combined with fine warp-threads disposed in sets or groups, each setcomprising a plurality of threads spaced apart but shedded as a unit and an additional thread which serves to tie the weft-threads in those portions of the fabric in which they would otherwise float, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM M. STEVENSOY.

Witnesses:

WALTER CHrsM, Jos. H. KLEIN. 

